Composite bow grip structure

Abstract

The utility model discloses a composite bow grip structure, which belongs to the technical field of composite bows, and comprises a grip base body, a mandrel rod group and a shell, the grip base body is axially provided with a through groove penetrating through the radial direction of the grip base body, and avoiding grooves are formed in the length direction of the through groove and on the corresponding groove walls of the two sides of the through groove; the mandrel rod set comprises a mandrel rotationally connected with the grip base body, the mandrel is arranged in the length direction of the through groove, and a limiting rod located in the receding groove is arranged on the mandrel. The shell is arranged outside the grip base body and fixedly connected with the limiting rod. According to the scheme, the core shaft rod set and the shell are fixedly connected, and the core shaft rod set and the grip base body are rotationally connected, so that when a user uses the composite bow, the hand and the shell are relatively fixed, and the bow body can automatically rotate to rectify deviation in the string pulling process; the bowstring and the bow handle can be kept on the plane perpendicular to the front side face in real time, and the shooting effect is improved.

Description

Technical Field

[0001] This utility model relates to a composite bow grip technology, and more specifically, to a composite bow grip structure. Background Technology

[0002] The compound bow grip is the front part of the bow that the user holds. When using a compound bow, different users will often cause the bowstring to shift due to their own gripping methods and habits. Traditional solutions rely on user experience to adjust the bowstring and lack an active correction mechanism. It takes a long time to develop muscle memory. Some compound bows are designed with torque-free grips, but these grips have complex structures and are more expensive to design.

[0003] For example, Chinese Patent Publication No. CN220912119U, published on May 7, 2024, discloses a utility model entitled "A Composite Bow with a Ball-Type Rotating Grip Structure." This application discloses a composite bow grip structure, including a bow frame. A grip is located in the center of the outer surface of the bow frame. An inner sheath is located inside the bow frame, and the outer wall of the inner sheath has symmetrically arranged annular grooves. Multiple balls are arranged on the outer wall of the inner sheath. A protective assembly is also provided on the outer wall of the inner sheath. The protective assembly includes a bearing seat, a first outer sheath, a second outer sheath, and a groove. The first outer sheath is located on one side of the outer wall of the inner sheath, and the second outer sheath is located on the other side. The bearing seat is located inside the bow frame. Rotating the grip causes the first and second outer sheaths to move together, causing the balls to roll along the annular grooves. This rolling of the balls significantly reduces friction during rotation, achieving smooth rotation and effectively avoiding accuracy problems caused by differences in bow push stress. However, the composite bow grip structure in this design is complex and has a high design cost. Furthermore, the grip cannot be fully gripped by hand, otherwise the grip cannot rotate adaptively, making it difficult for novice users to use. Utility Model Content

[0004] This invention overcomes the problems of complex and inconvenient use of existing composite bow grips, and provides a composite bow grip structure. The grip structure of this solution is simple, and the position of the bowstring can be adaptively adjusted in any gripping method, ensuring that the front hand and the rear hand are always in the same vertical plane, thus improving shooting accuracy. Moreover, it is simple and convenient to use, which is beneficial to novice users.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a composite bow grip structure, including a grip base, a spindle assembly, and a housing. The grip base has a through groove extending radially through the grip base along its axial direction, and clearance grooves are provided on the corresponding groove walls on both sides of the through groove along its length. The spindle assembly includes a spindle rotatably connected to the grip base. The spindle is arranged along the length of the through groove, and a limiting rod located in the clearance groove is provided on the spindle. The housing is disposed outside the grip base and fixedly connected to the limiting rod. The spindle acts as a rotating component, allowing the housing to rotate relative to the grip base. The limiting rod is arranged in the clearance groove, allowing it to rotate within the groove. Simultaneously, the limiting rod can contact both sides of the clearance groove to form a limiting effect, preventing excessive relative rotation angle between the housing and the grip base. In this design, a fixed connection is formed between the spindle assembly and the housing, and a rotatable connection is formed between the spindle assembly and the grip base. Thus, when the user uses the compound bow, the hand and the housing are relatively fixed, while the bow body can automatically rotate and correct its course during the string drawing process. This ensures that the bowstring and the bow handle can be kept in a plane perpendicular to the front side in real time, improving shooting performance, and is especially user-friendly for novice users.

[0006] Preferably, bearing assemblies are provided at both ends of the through groove, and the mandrel is connected to the bearing assemblies at both ends of the through groove. The bearing assemblies can improve the rotation effect of the mandrel, prevent the mandrel from jamming, and improve the self-adaptive effect of the compound bow.

[0007] Preferably, the bearing assembly includes a first bearing housing and a second bearing housing, which are disposed on both sides of the grip base and form a bearing mounting groove within the through groove, wherein a bearing is disposed within the bearing mounting groove. The bearing housing for mounting the bearing is formed by combining the first bearing housing and the second bearing housing, allowing the bearing housing to be arranged in the axial position of the through groove.

[0008] Preferably, the bearing mounting base is connected to the grip base via fasteners. The bearing mounting base is fixed to the grip base by fasteners, thus achieving the proper positioning of the bearing.

[0009] Preferably, two to four sets of clearance grooves are provided. With two to three sets of clearance grooves, the corresponding number of limiting rods is also two to three sets. This not only prevents the housing from swinging up and down, but also makes the arrangement of the number of limiting rods reasonable, which can effectively improve the connection strength between the spindle rod assembly and the housing.

[0010] Preferably, the length of the limiting rod is greater than the distance between the clearance slots on both sides of the through groove. Since the length of the limiting rod is greater than the distance between the two clearance slots at the same position, the limiting rod will contact the edge of the clearance slot as the spindle rotates, achieving a limiting effect and preventing excessive relative rotation between the housing and the bow, thus avoiding incorrect bow-holding posture. Specifically, the rotation angle range of the housing relative to the grip base is ±45°.

[0011] Preferably, the limiting rod has an axially connected hole, and the housing is connected to the connected hole by a fastener. After the limiting rod and the housing are connected by the fastener, the housing and the grip base can maintain synchronous movement, allowing the grip and bow to achieve adaptive adjustment.

[0012] Preferably, the housing is a split-type housing, and a limiting part is provided at one end of the housing along the length direction of the grip base. The limiting part provided in the length direction of the grip base can effectively prevent the housing from swinging up and down, improving the user experience; the split-type housing facilitates the assembly between the housing and the grip base.

[0013] Preferably, a memory material patch is attached to the outer surface of the housing. Placing the memory material patch on the surface of the housing effectively prevents mechanical damage to the user, preventing abrasions, redness, and skin breakage on the user's hands.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) During the process of drawing the bow, the bow body can automatically rotate and correct its deviation, so that the bow string and the bow handle can be kept on a plane perpendicular to the front side in real time, thus improving the shooting effect; (2) No need for active adjustment, the grip swing process automatically compensates for hand deviation; (3) It is simple and convenient to use, and has a protective effect on the hand, which is beneficial to novice users. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the composite bow of this utility model.

[0016] Figure 2 for Figure 1 An enlarged diagram of A in the diagram.

[0017] Figure 3 This is an exploded view of the grip structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the grip base of the present invention.

[0019] Figure 5 This is a cross-sectional view of the grip base of this utility model.

[0020] In the diagram: 1. Grip base, 1.1. Through groove, 1.2. Circumvention groove, 2. Spindle rod assembly, 2.1. Spindle, 2.2. Limiting rod, 2.21. Connecting hole, 3. Housing, 3.1. Limiting part, 3.2. Mounting hole, 4. Bearing assembly, 4.1. First bearing seat, 4.2. Second bearing seat, 4.3. Bearing, 4.4. Bearing seat mounting groove, 5. Memory material patch, 6. Handle. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1: As Figures 1 to 5 The compound bow grip shown includes a grip base 1, a spindle assembly 2, and a housing 3. Specifically, the grip is D-shaped, with the curved edge of the D-shape located at the front (outward) of the bow handle 6. The vertical edge of the D-shape forms the grip base 1, which is located at the rear (inward) of the bow handle 6. The spindle assembly 2 is vertically mounted on the grip base 1, and the housing 3 is located outside the grip base 1. The spindle assembly 2 is a rotating component inside the grip base 1, and the housing 3 is rotatably connected to the grip base 1 via the spindle assembly 2. When using the compound bow, the user's hand and the housing 3 are relatively fixed, while the bow body automatically rotates and corrects its trajectory during string drawing, ensuring that the bowstring and bow handle 6 remain perpendicular to the front side, improving shooting performance, especially for novice users.

[0023] Specifically, the grip base 1 has an oblong or elliptical cross-section. A through groove 1.1 is provided in the axial direction of the grip base 1. The length of the through groove 1.1 is at least 2 / 3 of the length of the grip base 1. The through groove 1.1 is formed as a rectangular through hole structure. Two sets of clearance grooves 1.2 are provided inside the through groove 1.1. The clearance grooves 1.2 are arranged along the length of the through groove 1.1, and clearance grooves 1.2 are correspondingly provided on the two side walls of the through groove 1.1. The clearance grooves 1.2 on both sides of the through groove 1.1 are arc-shaped grooves. The clearance grooves 1.2 and the through groove 1.1 penetrate the grip base 1 in the same direction. The through groove 1.1 and the clearance grooves 1.2 are both arranged in the horizontal direction, that is, in the direction perpendicular to the axial direction of the grip base 1, and are spaced apart from the through groove 1.1 between the two clearance grooves 1.2. Therefore, the two clearance grooves 1.2 at the same position of the through groove 1.1 form an oblong hole structure.

[0024] Furthermore, the mandrel assembly 2 includes a mandrel 2.1 and limiting rods 2.2. The mandrel 2.1 is a cylindrical rod structure, arranged inside the through groove 1.1. The length direction of the mandrel 2.1 is the same as the length direction of the through groove 1.1, and bearing assemblies 4 are provided at the upper and lower ends of the through groove 1.1. The mandrel 2.1 is connected to the bearing assemblies 4 at both ends of the through groove 1.1, so that the mandrel 2.1 can rotate inside the through groove 1.1. Two sets of limiting rods 2.2 are also arranged on the mandrel 2.1. Each set of limiting rods 2.2 forms a cross-shaped structure with the mandrel 2.1. The limiting rods 2.2 and the mandrel 2.1 are fixedly connected. When the mandrel 2.1 is assembled on the through groove 1.1, the position of the limiting rod 2.2 is exactly aligned with the position of the clearance groove 1.2 in the through groove 1.1.

[0025] It should be noted that the length of the limiting rod 2.2 is greater than the distance between the two clearance grooves 1.2 at the same position on both sides of the through groove 1.1. Since the two clearance grooves 1.2 form a waist-shaped structure in the horizontal direction, when the limiting rod 2.2 rotates on the horizontal plane (synchronously with the spindle 2.1), it can form a certain angle of deflection between the clearance grooves 1.2, and the rotation angle range in both directions is consistent. Because the length of the limiting rod 2.2 is greater than the distance between the two clearance grooves 1.2 at the same position on both sides of the through groove 1.1, when the rotation angle of the spindle 2.1 is too large, the limiting rod 2.2 will abut against the bottom edge of the clearance groove 1.2 (outer surface of the grip base 1), restricting the limiting rod 2.2 from continuing to rotate, thereby preventing the spindle rod assembly 2 from driving the housing 3 to rotate too much and avoiding an undesirable bow grip posture. Specifically, the rotation angle range of the spindle assembly 2 relative to the grip base 1 is ±45°, that is, the rotation angle range between the housing 3 and the grip base 1 is ±45°.

[0026] Furthermore, the bearing assembly 4 includes a first bearing housing 4.1 and a second bearing housing 4.2. Since the grip base 1 is an integral structure, after the through groove 1.1 structure is opened on the grip, the bearing 4.3 cannot be effectively installed inside the through groove 1.1. Therefore, in this solution, the bearing housing is designed in half to form the first bearing housing 4.1 and the second bearing housing 4.2. Specifically, bearing housing mounting grooves 4.4 are provided on both sides of the grip base 1 (along the two sides of the through groove 1.1). A first bearing housing 4.1 and a second bearing housing 4.2 can be installed in the bearing housing mounting grooves 4.4. After the first bearing housing 4.1 and the second bearing housing 4.2 are installed, a cylindrical bearing mounting groove is formed between the first bearing housing 4.1 and the second bearing housing 4.2 at the location of the through groove 1.1, and the axial direction of the bearing mounting groove is the same as the length direction of the through groove 1.1. This allows the bearing 4.3 to be installed inside the through groove 1.1, and the radial dimension of the bearing 4.3 is smaller than the internal dimension of the through groove 1.1. After the bearing 4.3 and the spindle 2.1 are connected, the spindle rod assembly 2 can rotate relative to the grip base 1. Utilizing the low friction characteristics of the bearing assembly 4 and the grip's center of gravity balancing design, when the shooter's hand applies force and deviates, the grip automatically rebounds to the vertical reference position under the action of gravity torque.

[0027] It should be noted that the first bearing housing 4.1 and the second bearing housing 4.2 are arranged in the bearing housing mounting grooves 4.4 on both sides of the grip base 1, and then fixedly connected by fasteners. Specifically, the fasteners are screw structures. The bearing 4.3 is an MR84-ZZ type miniature sealed bearing. The bearing system can achieve no performance degradation under environmental conditions of -20℃ to 60℃ and 100% humidity. The sealed cavity of the bearing 4.3 is filled with solid grease to isolate sand and dust and achieve a 100,000-cycle oscillation life, realizing the maintenance-free design of the bearing assembly 4.

[0028] Example 2: As Figures 1 to 5 The compound bow grip shown includes a grip base 1, a spindle assembly 2, and a housing 3. Specifically, the grip is D-shaped, with the curved edge of the D-shape located at the front (outward) of the bow handle 6. The vertical edge of the D-shape forms the grip base 1, which is located at the rear (inward) of the bow handle 6. The spindle assembly 2 is vertically mounted on the grip base 1, and the housing 3 is located outside the grip base 1. The spindle assembly 2 is a rotating component inside the grip base 1, and the housing 3 is rotatably connected to the grip base 1 via the spindle assembly 2. When using the compound bow, the user's hand and the housing 3 are relatively fixed, while the bow body automatically rotates and corrects its trajectory during string drawing, ensuring that the bowstring and bow handle 6 remain perpendicular to the front side, improving shooting performance, especially for novice users.

[0029] Specifically, the grip base 1 has an oblong or elliptical cross-section. A through groove 1.1 is provided in the axial direction of the grip base 1. The length of the through groove 1.1 is at least 2 / 3 of the length of the grip base 1. The through groove 1.1 is formed as a rectangular through hole structure. Two sets of clearance grooves 1.2 are provided inside the through groove 1.1. The clearance grooves 1.2 are arranged along the length of the through groove 1.1, and clearance grooves 1.2 are correspondingly provided on the two side walls of the through groove 1.1. The clearance grooves 1.2 on both sides of the through groove 1.1 are arc-shaped grooves. The clearance grooves 1.2 and the through groove 1.1 penetrate the grip base 1 in the same direction. The through groove 1.1 and the clearance grooves 1.2 are both arranged in the horizontal direction, that is, in the direction perpendicular to the axial direction of the grip base 1, and are spaced apart from the through groove 1.1 between the two clearance grooves 1.2. Therefore, the two clearance grooves 1.2 at the same position of the through groove 1.1 form an oblong hole structure.

[0030] Furthermore, the mandrel assembly 2 includes a mandrel 2.1 and limiting rods 2.2. The mandrel 2.1 is a cylindrical rod structure, arranged inside the through groove 1.1. The length direction of the mandrel 2.1 is the same as the length direction of the through groove 1.1, and bearing assemblies 4 are provided at the upper and lower ends of the through groove 1.1. The mandrel 2.1 is connected to the bearing assemblies 4 at both ends of the through groove 1.1, so that the mandrel 2.1 can rotate inside the through groove 1.1. Two sets of limiting rods 2.2 are also arranged on the mandrel 2.1. Each set of limiting rods 2.2 forms a cross-shaped structure with the mandrel 2.1. The limiting rods 2.2 and the mandrel 2.1 are fixedly connected. When the mandrel 2.1 is assembled on the through groove 1.1, the position of the limiting rod 2.2 is exactly aligned with the position of the clearance groove 1.2 in the through groove 1.1.

[0031] It should be noted that the length of the limiting rod 2.2 is greater than the distance between the two clearance grooves 1.2 at the same position on both sides of the through groove 1.1. Since the two clearance grooves 1.2 form a waist-shaped structure in the horizontal direction, when the limiting rod 2.2 rotates on the horizontal plane (synchronously with the spindle 2.1), it can form a certain angle of deflection between the clearance grooves 1.2, and the rotation angle range in both directions is consistent. Because the length of the limiting rod 2.2 is greater than the distance between the two clearance grooves 1.2 at the same position on both sides of the through groove 1.1, when the rotation angle of the spindle 2.1 is too large, the limiting rod 2.2 will abut against the bottom edge of the clearance groove 1.2 (outer surface of the grip base 1), restricting the limiting rod 2.2 from continuing to rotate, thereby preventing the spindle rod assembly 2 from driving the housing 3 to rotate too much and avoiding an undesirable bow grip posture. Specifically, the rotation angle range of the spindle assembly 2 relative to the grip base 1 is ±45°, that is, the rotation angle range between the housing 3 and the grip base 1 is ±45°.

[0032] Furthermore, the bearing assembly 4 includes a first bearing housing 4.1 and a second bearing housing 4.2. Since the grip base 1 is an integral structure, after the through groove 1.1 structure is opened on the grip, the bearing 4.3 cannot be effectively installed inside the through groove 1.1. Therefore, in this solution, the bearing housing is designed in half to form the first bearing housing 4.1 and the second bearing housing 4.2. Specifically, bearing housing mounting grooves 4.4 are provided on both sides of the grip base 1 (along the two sides of the through groove 1.1). A first bearing housing 4.1 and a second bearing housing 4.2 can be installed in the bearing housing mounting grooves 4.4. After the first bearing housing 4.1 and the second bearing housing 4.2 are installed, a cylindrical bearing mounting groove is formed between the first bearing housing 4.1 and the second bearing housing 4.2 at the location of the through groove 1.1, and the axial direction of the bearing mounting groove is the same as the length direction of the through groove 1.1. This allows the bearing 4.3 to be installed inside the through groove 1.1, and the radial dimension of the bearing 4.3 is smaller than the internal dimension of the through groove 1.1. After the bearing 4.3 and the spindle 2.1 are connected, the spindle rod assembly 2 can rotate relative to the grip base 1. Utilizing the low friction characteristics of the bearing assembly 4 and the grip's center of gravity balancing design, when the shooter's hand applies force and deviates, the grip automatically rebounds to the vertical reference position under the action of gravity torque.

[0033] It should be noted that the first bearing housing 4.1 and the second bearing housing 4.2 are arranged in the bearing housing mounting grooves 4.4 on both sides of the grip base 1, and then fixedly connected by fasteners. Specifically, the fasteners are screw structures. The bearing 4.3 is an MR84-ZZ type miniature sealed bearing. The bearing system can achieve no performance degradation under environmental conditions of -20℃ to 60℃ and 100% humidity. The sealed cavity of the bearing 4.3 is filled with solid grease to isolate sand and dust and achieve a 100,000-cycle oscillation life, realizing the maintenance-free design of the bearing assembly 4.

[0034] Furthermore, in this embodiment, the housing 3 also adopts a split design, which can be composed of two left and right housings 3. The housing 3 is adapted to the outer surface of the grip base 1 and fixedly connected to the spindle assembly 2, so that the housing 3 can rotate relative to the grip base 1. There are also multiple ways to fix the housing 3 to the spindle assembly 2. The mounting hole can be set inside the housing 3, and then the end of the limiting rod 2.2 can be directly pressed into the mounting hole to form a fixation; or the mounting hole can be set on the housing 3, and the connecting hole can be set axially on the limiting rod 2.2, and the mounting hole on the housing 3 and the connecting hole on the limiting rod 2.2 can be connected together by fasteners. Specifically, in this embodiment, the housing 3 and the spindle assembly 2 adopt the second fixing connection method described above. The housing 3 is made of plastic, and mounting holes 3.2 are provided on both sets of housing 3. The mounting holes 3.2 are through holes, and a countersunk hole is provided on one side of the outer surface of the housing 3. Connecting holes 2.21 are provided at both ends of the axial direction of the limiting rod 2.2. The connecting holes 2.21 are threaded holes. The connecting holes 2.21 on both sides of the limiting rod 2.2 are connected to the mounting holes 3.2 on both sides of the housing 3 by screws, thereby fixing the limiting rod 2.2 and the housing 3. After installation, the screws are hidden in the countersunk holes at the mounting holes 3.2. It should be noted that the radial dimension inside the housing 3 is slightly larger than the outer diameter of the grip base 1 to prevent the two from fitting together and hindering relative rotation.

[0035] A limiting part 3.1 is also provided at the upper end of the housing 3. The limiting part 3.1 is perpendicular to the housing 3 and can abut against the middle seat in the middle of the bow handle 6, improving the stability of the housing 3 on the grip. A memory material patch 5 is also provided on the outside of the housing 3. The memory material patch 5 can form a user-specific hand-shaped groove after multiple (5 to 7) uses of the composite bow, improving the pressure distribution efficiency by 52%. The memory material patch 5 can be made of SMP material.

Claims

1. A composite bow grip structure, characterized in that, include The grip base has a through groove extending radially through the grip base along the axial direction, and clearance grooves are provided on the corresponding groove walls on both sides of the through groove along the length direction of the through groove. A spindle assembly includes a spindle rotatably connected to a grip base, the spindle being arranged along the length of the through groove, and a limiting rod located in the clearance groove on the spindle; The housing is located outside the grip base and is fixedly connected to the limiting rod.

2. The composite bow grip structure according to claim 1, characterized in that, The through groove is provided with bearing assemblies at both ends, and the mandrel is connected to the bearing assemblies at both ends of the through groove.

3. The composite bow grip structure according to claim 2, characterized in that, The bearing assembly includes a first bearing housing and a second bearing housing. The first bearing housing and the second bearing housing are located on both sides of the grip base and form a bearing mounting groove in the through groove. The bearing mounting groove is provided with a bearing.

4. The composite bow grip structure according to claim 3, characterized in that, The bearing assembly is connected to the grip base via fasteners.

5. A composite bow grip structure according to any one of claims 1 to 4, characterized in that, The clearance slots are provided in 2 to 4 sets.

6. A composite bow grip structure according to any one of claims 1 to 4, characterized in that, The length of the limiting rod is greater than the distance between the clearance slots on both sides of the through slot.

7. A composite bow grip structure according to any one of claims 1 to 4, characterized in that, The limiting rod is provided with a connecting hole in the axial direction, and the housing is connected to the connecting hole by fasteners.

8. A composite bow grip structure according to any one of claims 1 to 4, characterized in that, The housing is a split housing, and a limiting part is provided at one end of the housing along the length direction of the grip base.

9. A composite bow grip structure according to any one of claims 1 to 4, characterized in that, The outer surface of the housing is fitted with a memory material patch.

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